Pronouns generally fall into three groups; Subject, possessive, and object (both direct and indirect). If a personal pronoun is serving as an indirect object and there is a direct object pronoun next to it before the verb, then according to the rules, the indirect object personal pronoun would have it's spelling changed - reverting from Clitic to Tonic form. (See Tips and Notes in the Clitics-1 module).
Some more information - skip if you like:
According to Wikipedia:
"Personal pronouns are pronouns that are associated primarily with a particular grammatical person – first person (as I), second person (as you), or third person (as he, she, it, they).
"Personal pronouns may also take different forms depending on number (usually singular or plural), grammatical or natural gender, case, and formality.
"The term "personal" is used here purely to signify the grammatical sense; personal pronouns are not limited to people and can also refer to animals and objects (as the English personal pronoun it usually does)."
My take on this is that, if the pronoun appears in a conjugation table, it's a personal pronoun: I, we, you, he, she, it, and they. That also includes objective case-forms me, us, you, him, her, it, them and possessive forms my/mine, our/s, your/s, his, hers, its, and their/s. Other languages have other case-forms.
I honestly can't think of any other kinds of pronouns, so "personal" may be an ultimate redundancy. Words like "this, that, those, these, which...." are "determiners" - they modify nouns ("those things") or serve as conjunctions ("those things which I like"). Sometimes they seem to sever as pronouns ("This is the end, my friend". - J. Morrison), but in that role they are still determiners modifying an unspoken noun, often because the concept being addressed is too big or complex to encapsulate in a single word ("this [what?] is the end").
I'm not sure about the Italian, but in English (to me, a native speaker from the Midwest USA), using ‘felt’ instead of ‘feel’ makes it counterfactual: she doesn't feel alone, but it's as if she did. (Although you could use it sarcastically: obviously, she feels alone, you insensitive jerks!)