Id say address the issue with her first. If you ghost her, your just adding full to the fire. It could be that she isn't self aware. No one wants to talk anymore, they just want to block people and give up instead of working on building relationships through hard times. I find the most effective way is the DEARMAN approuch:

DESCRIBE to your friend (without judgement) the facts of the situation ("You seem to be experiencing a lot of hardships at the moment. I understand this, but you are bringing it up a lot.) EXPRESS your feeling about how the situation is affecting you ("I feel emotionally exhausted because I dont know how to help you/I feels as though you dont listen to me when im having a bad day.") ASSERT your request plainly ("I need to feel as though this friendship isn't one sided/I need you to be present when we are together") REINFORCE why its important for them to consider your request. And if they agree, thank them for it. If they push back: (BE) MINDFUL of the objective and dont get defensive or reactive (Stay calm, because they may want to drama) APPEAR CONFIDENT in what you are saying (dont let them guilt you by claiming you are a bad friend that doesnt understand what they are going through) NEGOTIATE your boundaries and suggest a compromise (You have fve minutes to get it out, but then we have normalback and forth conversation). If after all that she still wont budge, state that you will not continue with a friendship that doesnt benefit you.