Is it normal my mother-in-law is crazy?

So at first, she seemed really kind and down-to-earth and SHE IS but she's absolutely MAD.

I decided to google her name to see if anything came up as I find it amusing and DIDN'T EXPECT ANYTHING...BAD IDEA.

Up pops a photobucket account with weird pervy photos of her WITH MEN and she's a married woman with 4 kids (2 of which are under 10). In the photos, she's either at a pub or at her male friend's place. In one of the photos, for example, she has her pants off and is just in her underwear and top. This woman is not young or petite (she's 60 and is obese). So one, it's disturbing because she's a mature married woman and two, she doesn't have the figure.

I know she drinks a lot but I did not know she was this wild. This upset me so much. I tried to google more and ended up finding a vine page where she made vines with her daughter (12 yr old)saying the word "c*nt". She says to her daughter, "go ahead, say it" and then her daughter says, "it smells fishy in here" and then her mum goes, "hm, you're right, it smells like my c*nt" and in ANOTHER vine, she's with her daughter again and she and her daughter are both holding up a glass of wine and her mum says, "lets f*cking party and get down and dirty!" and the daughter says, "f*ck you mum, you know you're too old" and then her mum says, "i'm never too old and you're never too young!" and they both drink their wine down.

So yeah, my mother-in-law is crazy. IIN?