Understand "Friends"

How is someone suppose to feel if a friend never hangs out with you, without their kids. In our 7 years of friendship, there was only 2 times we hung out without kids for like no more than an hour and it was super close to her house. She lets her kids stay at the grandparents while she goes out with her husband all day. The 2 times we hung out was to drink but i dont like drinking anymore. I want to spend the day doing an activity without the kids for a bit. I invited her to do something and she seemed like she wanted to (texting throughout the day) but than she suddenly said she thinks she getting sick but still went to the gym and did other things. (We have location share). When shes at my house, she wont even let her kids go next door to play with my kids on the patio (where we can see them, my kids abuela is also there) so they have enough supervision. Idk if its anxiety realated to her but im feeling negative about it??? Is that wrong?? Its just when i want a break from my kids, i want a break from all kids..... idk maybe im awful.