Could someone please correct these sentences

How about these?
My mother is going abroad on Wednesday to renew her visa. It's difficult to say exactly which day she will come back.
I can't stay at home alone without her, so I'm boarding in a new place near our university.
Then I'll have no one to talk to about my day. I wonder how I will be able to manage without her.

Thank you so much. But in last sentence why can't we use would or could rather than will?

Would suggests a hypothetical situation that doesn't exist. "If my mother were not there, what would I do?"
Could is more likely to be used when discussing a past situation. "My mother wasn't there, so what could I do?"
Will is best for a situation that is expected to exist. "When my mother goes out of town, what will I do?"

Thank you.
Then can I say, "If I had money today I would pay the telephone bill on my way home now. But unfortunately I hadn't

If I had (the) money (today) I would pay the telephone bill on my way home (now). But unfortunately I haven't got the/any/enough money.
The money can mean enough money.

My eyes are on all of you here, so I can learn something new and can add frills to my English.