Its hard to know at the beginning of relationships if your values are aligned. You might expect a person to do certain things under certain circumstances but there might be different expectations. Its up to you to know what you want and encourage that or move on.
My hubby is a lovely person but he can be a bit slow sometimes in understanding the things that im dealing with. Ive had to guide him and have vented a few times.
Just because your partner is female doesnt mean they are any more able to deal with it. Cancer is very feared. Breast cancer in women is very feared. I know it doesnt make sense when you are the one it impacts most but there you go. Friends and non romantic partners can also be cutting. My brother only contacted me via text twice during chemo. Does it bother me - yes - do i think he doesnt care - no. Likewise close friends all visited me just once. In the end i just decided that the place we are at in life, they are still living it and my life has slowed and become quite concentrated.
My sister rang me every day and she is my bestie. My parents were amazing.