My Wife Has been acting strange with her phone and ipad for a few months now

Hi all,
Just seeking some views on my wifes behavior with the iphone and ipad.
We have been married for 33 years, Iam 55 and she is 53.
ahe does sleep over shifts as a disability support worker, sometimes doing double and on the odd occassion triple shifts, and has been in the industry for 11 years. About 7 months ago I had bad "gut feelings" that something wasn't right as she was coming home from work later in the mornings, i.e; she finishes at 8am and the times over a week or so were blowing out from 9.30am to 11am.
When I would ask her what was up she would look at me "sheepishly" and say oh I had a late night, and had to do reports etc, which is fine, but the only problem is my guts was telling me otherwise, it was saying "warning,warning".

At the same time I noted on her inbox,[ we access each others inboxs] that some womens porn sites had landed into her inbox...not the spam box where it usually goes, I didn't say anything as she had told me in the past that now and then she may have a look [ didn't know which type but ] as have I in the past.
That settled for me but a couple of weeks ago her phone bahaviour has in my opinion become stranger, we went for a 3 hour drive to our other place and on the way she was glued to her phone, was playing poker machines [ free ] on her ipad and watching her phone like a hawk' for intervals on the way to our place. I was driving but very much so noticed what she was doing.
On the way back she did similar and when I stopped to check my trailer on the side of the road as I got back into the car I looked her in the eyes and I saw her change the iphone back to the home position [ showing the ap screen only].

She has been going through Menopause for about 2 years and there has been some odd behaviour to deal with there as well but I presumed we had that sorted as I have spoken to her about it several times, I have an understanding of it.
During the past 6 months her time in the bathroom either before showering or when supposedly going to the toilet she has either her ipad with her or both the phone and ipad?.
This morning she was not working and was home for the night and I noted that she got up at 5.45 am and stayed in the bathroom until 7am, the toilet flushed after probably 30 minutes, then the shower was on for 20+ minutes, finally returning to bed at 7am, then getting back up to let the dog out.

When I got up at 7.30am I looked her in the eyes and got a don't ask stair back from her????, yes I noted the times as I woke up for some reason and she was out of the room, I got up to go to the toilet and the door was locked and she was in the bathroom so I went back to bed.
My point is I have a concern that my guts went funny a couple of times over the last 7 months and the emails that time that I saw for sites to look at of women.
After she knew I had seen them the next day she casually said, " do you get any porn in your inbox because I have had some lately and I shouldn't be getting it", I replied yes but it goes into my spam box not my email box.
She has this last week changed her password on her mail box and I can't access it, we have two laptops and the one she is using she has signed up with VPN because she likes to down load movies, now I can't access that lap top either.

she also watches incessantly 'Wentworth', Orange is Black' and Walking Dead' which I believe all have high followings of Gay//Bisexual women?? I don't watch any of this sort of stuff, so can only go on what I have read.

And Yes ; I have asked her several times if she has had bi tendancies and I get shouted down with " that stuff makes my stomach turn" and how revolting' so I have to take her word for it.......but why does my guts get that crap feeling on the odd occassion????
So what do you think?? do I have an issue here or do I "pull my head in" and just go fishing and forget about what she does???
The relationship is generally good all the time although I am highly sexed compared to what she has ever wanted from me, but last week she woke up in the morning and " stoked my fires like I can't remember and we had sex 3 times during the day??? and she was ready to go all day which is very odd.

Thanks for your time
What do you think?
Felix