is it okay to put my fumo in a washing machine *once*?

it fel into a dusty area probably more than a year ago at this point and at no point did i have enough patience and motivation to buy all the stuff and do all the prep to start cleaning her properly and atp i don't trust myself to ever have it.

is it okay to just put her in the washing machine once and get it over with? how many times could i put her in the washing machine safely?

it's a saya fumo, the first version if that matters.