Good morning- Of course she is. As she gains more strength and wants to get out you might want to invest in a more comfortable way to carry oxygen. I have no personal knowledge as I am still oxygen free!

Here is a list that you might want to be put on your future list of possibilities:
https://gizmodo.com/advisor/portable-oxygen-concentrators/
I'm sure that Liz is going through immense changes as this has most likely hit her like a Mack truck. So much and much more quickly than I'm sure you both expected. Her interests right now are most likely very introspect, reevaluating her life and her thoughts about life and what it means. And she is probably very tired.

I understand her not being interested in exercising. Her life has become a heavy burden on her shoulders and yours. It's all part of the process that cancer entails. I'm sure that you realize most of this.
I can understand her not wanting to "talk" on Connect. When I had my first cancer I didn't want to talk to anyone other than my immediate family.

Please know that I am here whenever she wants to talk or she can Private message me, or not.

Please extend my thoughts to Liz. Take care.

Merry