End of july is pretty near but a machine can be monthly rented. https://www.thecpapbox.com/
She could sleep in a recliner, or an elevated head bed, or use sleeping wedges. https://www.amazon.com/Bed-Wedge-Pillow-Adjustable-Heartburn/dp/B07PLMGC9C/ref=sr_1_4?crid=2LN560WTKU0QY&keywords=wedge+pillows&qid=1653718827&refinements=p_36%3A1253520011&rnid=386636011&s=hpc&sprefix=wedge+%2Caps%2C1492&sr=1-4
But again spending money for the period left until end of july would seem expensive.
I bought this: https://www.amazon.com/gp/product/B07PLMGC9C/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&th=1
I wouldn't have made it this far without it.
Also, straws.
Bed Wedge Pillow - Adjustable... https://www.amazon.com/dp/B07PLMGC9C?ref=ppx_pop_mob_ap_share
I’ve had good luck with wedge pillows like this. I even bought an inflatable version for traveling.